Sorry i've got to say this, but, i've got both too, and for me, the fiesta is better. Maybe it's just the way my car is set up though at the moment.
I've been in some very good handling escorts over the years though but driving what i've got, ERST on coilovers and FRST on another package the FRST feels better round the twisties. To me. Every cars different though i suppose.
Fiesta is more practical though and not quite a handful as much as the Escort is.